Automatic constant-discharge water-gate.



UNITED STAT Efi -PATENT ()FFIOE. v

FRANK W. HANNA, OF DEFIANCE, IOWA, ASSIGNOR OF ONE-HALF T JOSEPH PORT BYRON, NEW YORK.

a. aoor, OF

su'roua'rrc CONSTANT-DISCHARGE WATER-GATE.

.sr t w en ette e e t were ea 27,

hpplicatipn Qled August 5, 1903. fleri al No. $47,116.

To all whom it may concern:

'Beit known that I, FRANK W. HANNA, a citizen of the United States, residing at "Defiance, in the county of Shelby and State of Iowa, have invented a new and useful Imppcvement in Automatic Constant-Discharge ater-G-ates, of which the following is a specification.

The invention relates to an automatic constant-discharge water gate producing in effect either a movable weir or a movable orifice of adjustable size and has for its object the automatic regulation and measurement of water discharged from canals, reservoirs or other receptacles for carrying or storin .water.

This 0 ject is attained by means of a movable water gate mechanically connected with an intake receiving water from the fluctuating water surface of a canal or reservoir or otherreceptacleat an adjustable height above the discharge opening produced by the said gate and communicating by means of a telescoping pipe or pipes with a bucket likewise. mechanically connected with the said gate and intake and provided with a water cushion for retarding accelerated motion of the operating mechanism and preventing excessive and unduly oscillating motion thereof. A

In the accompanying drawing illustratint-he invention, Figure 1 shows a section of the headworks of a movable weir water gate operated by the varying flow of water entering a suspended intake, the o erating power being supplied by the weig t of water in a bucket governed by an adjustablewater cushion and the combined active weights of the gate and intake; Fig. 2 shows a section of the headworks of a movable orifice water gate operated by the varying flow of water entering a suspended intake, the operating power being supplied by the weight of water in a partially submerged bucket and the active weights of the gate and intake; Fig. 3 shows a plan of the devices shown insection in Figs. land 2; and Figs. 4, 5 and 6 show the details of a suitable mechanism for reducing the amount of friction and leakage in connection with the gate.

In Figs. 1, 2 and 3 the water gate 1 and the sus nded intake 2 having its top at an adjusta le height above the discharge opening reduced by the said gate are supported by 0 mm 3 attached to equal sheaves 4 so .8 attached to a sheave 9 so mounted .on the same shaft that rotation thereof will cause the bucket to rise as the gate and intake fall,

mounted on a shaft 5 on fixed bearings 6 and conversely. The intake chamber 10 is connected by means of an opening 11 with the main canal or reservoir so that the water surface 12 in the intake chamberand that 12 in .the main canal or reservoir are at the same elevation. The suspended intake has at the small end of the funnel portion a pipe or series of telescoping pipes 13 connecting with a vertical pipe lfl in .the floor of the chamber that in turn connects with another pipe 15 discharging into the bucket 7 with the adjustable outlet 16. To the bottom of the bucket shown in Fig. 1 is attached an adjustable water cushion consisting of a piston '17 operating in a pipe 18 having .a

small adjustable discharge openin'r 19, the

lower portion of the pipe being submerged. A portion of the bucket shown in Fig. 2 is submerged in the water of the bucket chamber, thus formin an open Water cushion. The bucket cham er 20 shown in Firs. l, 2 and 3 may be provided with a discarfe opening 21 connected with he takeout canal r any other convenient channel for disposing of excess .Wateri or the bucket and its water cushion may be inclosed in a water ti'xht compartment or well' from which the excess water may be mechanically renoved.

'With theoperating system in equilibrium. the common Water surface in the main canal and intake chamber is slightly'above the top 'of the intake and a constant small amount of water entering the intake flows through the connecting pipes, the bucket and the adjustable outlet lat the bottom thereof. If the Water surface in the main canal rises a larger amount of water will enter the intake than can be discharged through the outlet of the bucket thus increasing the weight of the contents of the bucket and causing the gate and intake to rise until the excess flow is stopped and equilibrium reestablished. On the other hand if the water-surface in the main canal falls the flow into the intake will diminish and the discharge from the bucket outlet will decrease the weight of the'contents of the bucket thus ermitting the gate and intake to descend of their own weight until the inloo ' creasing flow into the intake again establishes equilibrium. The adjustable water,-

cushion shown in Fig. l and the open water cush on shown in Fig. 2 will act as a retardant to accelerated motion of the operating .mechanism and will prevent excessive and through the gate and frame. Leakage around the gate may be reduced'by the use of stanch rods 23 as shown in section in Figs. 4 and 6 and in plan in Fig.5.

The use of the movable Weir "water' gate or that ofthe movable orifice water gate depends upon the local necessity for taking water out of the main canal near the surface or at considerable depths below it. The discharge capacity of the weir water gate shown in Fig. 1 is varied throu h changing the height of, the top of the intaie above the crest of the weir by means of the adjusting rod and screw 24:; and the discharge capacity of the orifice gate shown in Fig. 2 is varied throughichanging the height of the top of the intake above the center 0 the gate orifice by means of the adjusting rod and screw 24, and

also through changing the size of the orifice by means of theshding plates 26.

Having thus described my invention, I now makethe following claims:

1. The combination of a movable water gate, an'intake mechanically connected therewith receiving water from the fluctuating water surface of a canal or reservoir and a mechanism hydraulically operated. by water received through the sald intake and likevsise mechanically connected with the said canal or reservoir.

gate, the Whole producing automatically a constant discharge from the said canal or reservoir. v

2. The combination of a movable water gate equipped with wheels to reduce friction and provi ed with stanch rods to prevent leakage, an intake mechanically connected therewith receiving Water from the'fiuct-uating water surface of a canal or reservoirand a mechanism hydraulically operated by water received through the saidi'intake and likewise mechanically connected with the said gate, the whole producing automaticallya constant discharge from the said-canal or reservoir.- I

3. The combination of a movable water gate, an'intake mechanically connected therewith at an adjustable height above the bot tom of the discharge opening produced by the said gate receiving water from the fluctuating water surface of a canal or reservoir and a bucket l kewase mechanically connected with the said gate communicating by 1 means of a telescoping pipe or pipes with the said intake and provided with an adjustable.

outlet and a water cushion, the whole pro ducing automatically a constant discharge from'the said canal or reservoir.

4. The combination of a movable water gate, an intake mechanically connected therewith at an adjustable height above the bot tom of the discharge openin produced by the said gate receiving water mm the fiuctuating water surface of a canal or reservoir and a bucket likewise mechan cally connected with the said gate communicating bymeans of a telescopgng ipe or pipes with the said ided with an adjustable out intake and prov let and an adjustable Water cushion with an adjustable outlet, the whole producing automatically a constant discharge from e said FRANK W. HANNA. 'Witnesses: I i 2 JOHN B. BEADLE, J o'sEPn H. Room. 

